Private Python2VBText As New TextBox ' Test float formatting with %._f. Public Sub Routine2 Dim x As Double x = 2.876543 Python2VBText.Text = Python2VBText.Text + "longer: " + (x.ToString("F5", CultureInfo.InvariantCulture)) + ", shorter: " + (x.ToString("F3", CultureInfo.InvariantCulture)) + "" + vbNewLine Python2VBText.MultiLine = True Python2VBText.Width = 200 Python2VBText.Height = 100 Form1.Controls.Add(Python2VBText) End Sub